Design Optimization of Hybrid Battery Based Gensets

This paper proposes an analytical method using a lithium-ion battery and generator data to provide insights and planning into a hybrid genset's optimal operational load, peak shaving, and fuel consumption difference with a standalone genset. The overview analysis is between the standalone genset and a battery-fused diesel generator. Further investigations into other factors (such as power output load, battery depth of discharge (DOD), battery charge and discharge time (number of operations in a day), battery total cycle and life span of the battery) play a significant role in the results. A numerical simulation was carried out to monitor the hybrid genset operation, whereby the battery DOD and the number of cycles were compared. Another simulation was performed to find the incremental results for a 135 Kw genset by varying the different battery DOD and the generator load difference. The simulation results indicate that the DOD decreases while the number of battery cycles increases, thereby enhancing the battery durability but is subjective to the daily operation time and load on the system. The combined results reveal that the battery unit will always generate adequate efficiency support for gensets.